from blind_watermark import WaterMark
bwm1 = WaterMark(password_img=1, password_wm=1)
len_wm = 319
wm_extract = bwm1.extract('output/embedded.png', wm_shape=len_wm, mode='str')#将output/embedded.png更改为待解密文件的相对路径
print(wm_extract[1:])